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mg to Tablets with Maximum Dose Cap

Caps a single dose to a maximum, then converts mg → tablets (orange C1C2 standard)

Calculator

Cap a dose to a maximum, then convert mg → tablets

Educational use only. Verify max dose limits in your local formulary and follow local policy.

How it works

This calculator prevents a calculated dose from exceeding an absolute maximum single-dose safety limit. It first applies the cap, then converts the resulting dose into tablets using the tablet strength.

Always confirm max dose limits in your local formulary/product info and follow local tablet-splitting policy.

Formula

Actual dose (mg) = min(Calculated dose, Max dose)
Tablets = Actual dose (mg) ÷ Tablet strength (mg/tablet)

Worked examples

Example 1: Calculated 800 mg, max 1000 mg, strength 400 mg/tablet

Actual dose = min(800, 1000) = 800 mg
Tablets = 800 ÷ 400 = 2 tablets

Example 2: Calculated 1200 mg, max 1000 mg, strength 500 mg/tablet

Actual dose = min(1200, 1000) = 1000 mg
Tablets = 1000 ÷ 500 = 2 tablets

Example 3: Calculated 300 mg, max 500 mg, strength 250 mg/tablet

Actual dose = min(300, 500) = 300 mg
Tablets = 300 ÷ 250 = 1.2 tablets

When this is used

  • Medications with an absolute maximum single-dose limit
  • Paediatric dosing (weight-based) where caps are common
  • High-risk meds where overdosing is clinically significant
  • Tablet-only scenarios where liquids/alternate strengths may be required

Frequently asked questions

Clinical reminder: Always follow local protocols and consult medication information sheets. These examples are for calculation practice only.

References & sources

Use these to verify dose caps, tablet splitting restrictions, and product-specific guidance.

Institute for Safe Medication Practices (ISMP)

Medication safety guidance

High-quality resources on preventing dosing/administration errors.

Therapeutic Goods Administration (TGA) — Product Information

Australia

Official AU source for medicine safety and prescribing info (PI).

British National Formulary (BNF)

NICE

Common reference for max doses, contraindications, formulation cautions.

WHO Essential Medicines List

World Health Organization

Baseline medicine reference list and safety context.

Related Calculators

mg → Tablets (Simple)
mg/kg → Tablets
Multiple Tablet Strengths (mg → Tablets)

Safety note

Max dose caps vary by medicine, indication, age/weight, and formulation. Confirm against an official formulary or PI.

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  • Calculator inputs processed locally
  • Not stored by us
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